src/mesa/drivers/dri/tdfx/tdfx_vb.c

   1 /*
   2  * GLX Hardware Device Driver for Intel i810
   3  * Copyright (C) 1999 Keith Whitwell
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
  21  * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  *
  24  */
  25 /* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_vb.c,v 1.3 2002/10/30 12:52:01 alanh Exp $ */
  26
  27 #include "glheader.h"
  28 #include "mtypes.h"
  29 #include "imports.h"
  30 #include "macros.h"
  31 #include "colormac.h"
  32
  33 #include "math/m_translate.h"
  34 #include "swrast_setup/swrast_setup.h"
  35
  36 #include "tdfx_context.h"
  37 #include "tdfx_vb.h"
  38 #include "tdfx_tris.h"
  39 #include "tdfx_state.h"
  40 #include "tdfx_render.h"
  41
  42 static void copy_pv_rgba4( GLcontext *ctx, GLuint edst, GLuint esrc )
  43 {
  44    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
  45    GLubyte *tdfxverts = (GLubyte *)fxMesa->verts;
  46    GLuint shift = fxMesa->vertex_stride_shift;
  47    tdfxVertex *dst = (tdfxVertex *)(tdfxverts + (edst << shift));
  48    tdfxVertex *src = (tdfxVertex *)(tdfxverts + (esrc << shift));
  49    dst->ui[4] = src->ui[4];
  50 }
  51
  52 static void copy_pv_rgba3( GLcontext *ctx, GLuint edst, GLuint esrc )
  53 {
  54    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
  55    GLubyte *tdfxverts = (GLubyte *)fxMesa->verts;
  56    GLuint shift = fxMesa->vertex_stride_shift;
  57    tdfxVertex *dst = (tdfxVertex *)(tdfxverts + (edst << shift));
  58    tdfxVertex *src = (tdfxVertex *)(tdfxverts + (esrc << shift));
  59    dst->ui[3] = src->ui[3];
  60 }
  61
  62 typedef void (*emit_func)( GLcontext *, GLuint, GLuint, void *, GLuint );
  63
  64 static struct {
  65    emit_func            emit;
  66    interp_func          interp;
  67    copy_pv_func         copy_pv;
  68    GLboolean           (*check_tex_sizes)( GLcontext *ctx );
  69    GLuint               vertex_size;
  70    GLuint               vertex_stride_shift;
  71    GLuint               vertex_format;
  72 } setup_tab[TDFX_MAX_SETUP];
  73
  74
  75 static void import_float_colors( GLcontext *ctx )
  76 {
  77    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
  78    struct gl_client_array *from = VB->ColorPtr[0];
  79    struct gl_client_array *to = &TDFX_CONTEXT(ctx)->UbyteColor;
  80    GLuint count = VB->Count;
  81
  82    if (!to->Ptr) {
  83       to->Ptr = ALIGN_MALLOC( VB->Size * 4 * sizeof(GLubyte), 32 );
  84       to->Type = GL_UNSIGNED_BYTE;
  85    }
  86
  87    /* No need to transform the same value 3000 times.
  88     */
  89    if (!from->StrideB) {
  90       to->StrideB = 0;
  91       count = 1;
  92    }
  93    else
  94       to->StrideB = 4 * sizeof(GLubyte);
  95
  96    _math_trans_4ub( (GLubyte (*)[4]) to->Ptr,
  97                     from->Ptr,
  98                     from->StrideB,
  99                     from->Type,
 100                     from->Size,
 101                     0,
 102                     count);
 103
 104    VB->ColorPtr[0] = to;
 105 }
 106
 107
 108 #define GET_COLOR(ptr, idx) (((GLchan (*)[4])((ptr)->Ptr))[idx])
 109
 110
 111 static void interp_extras( GLcontext *ctx,
 112                            GLfloat t,
 113                            GLuint dst, GLuint out, GLuint in,
 114                            GLboolean force_boundary )
 115 {
 116    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 117
 118    /*fprintf(stderr, "%s\n", __FUNCTION__);*/
 119
 120    if (VB->ColorPtr[1]) {
 121       INTERP_4CHAN( t,
 122                     GET_COLOR(VB->ColorPtr[1], dst),
 123                     GET_COLOR(VB->ColorPtr[1], out),
 124                     GET_COLOR(VB->ColorPtr[1], in) );
 125    }
 126
 127    if (VB->EdgeFlag) {
 128       VB->EdgeFlag[dst] = VB->EdgeFlag[out] || force_boundary;
 129    }
 130
 131    setup_tab[TDFX_CONTEXT(ctx)->SetupIndex].interp(ctx, t, dst, out, in,
 132                                                    force_boundary);
 133 }
 134
 135 static void copy_pv_extras( GLcontext *ctx, GLuint dst, GLuint src )
 136 {
 137    struct vertex_buffer *VB = &TNL_CONTEXT(ctx)->vb;
 138
 139    if (VB->ColorPtr[1]) {
 140          COPY_CHAN4( GET_COLOR(VB->ColorPtr[1], dst),
 141                      GET_COLOR(VB->ColorPtr[1], src) );
 142    }
 143
 144    setup_tab[TDFX_CONTEXT(ctx)->SetupIndex].copy_pv(ctx, dst, src);
 145 }
 146
 147
 148
 149 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT)
 150 #define TAG(x) x##_wg
 151 #include "tdfx_vbtmp.h"
 152
 153 /* Special for tdfx: fog requires w
 154  */
 155 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT)
 156 #define TAG(x) x##_wg_fog
 157 #include "tdfx_vbtmp.h"
 158
 159 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT)
 160 #define TAG(x) x##_wgt0
 161 #include "tdfx_vbtmp.h"
 162
 163 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 164 #define TAG(x) x##_wgt0t1
 165 #include "tdfx_vbtmp.h"
 166
 167 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_PTEX_BIT)
 168 #define TAG(x) x##_wgpt0
 169 #include "tdfx_vbtmp.h"
 170
 171 #define IND (TDFX_XYZ_BIT|TDFX_RGBA_BIT|TDFX_W_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT|\
 172              TDFX_PTEX_BIT)
 173 #define TAG(x) x##_wgpt0t1
 174 #include "tdfx_vbtmp.h"
 175
 176 #define IND (TDFX_RGBA_BIT)
 177 #define TAG(x) x##_g
 178 #include "tdfx_vbtmp.h"
 179
 180 #define IND (TDFX_TEX0_BIT)
 181 #define TAG(x) x##_t0
 182 #include "tdfx_vbtmp.h"
 183
 184 #define IND (TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 185 #define TAG(x) x##_t0t1
 186 #include "tdfx_vbtmp.h"
 187
 188 #define IND (TDFX_RGBA_BIT|TDFX_TEX0_BIT)
 189 #define TAG(x) x##_gt0
 190 #include "tdfx_vbtmp.h"
 191
 192 #define IND (TDFX_RGBA_BIT|TDFX_TEX0_BIT|TDFX_TEX1_BIT)
 193 #define TAG(x) x##_gt0t1
 194 #include "tdfx_vbtmp.h"
 195
 196
 197
 198 static void init_setup_tab( void )
 199 {
 200    init_wg();
 201    init_wg_fog();
 202    init_wgt0();
 203    init_wgt0t1();
 204    init_wgpt0();
 205    init_wgpt0t1();
 206
 207    init_g();
 208    init_t0();
 209    init_t0t1();
 210    init_gt0();
 211    init_gt0t1();
 212 }
 213
 214
 215 void tdfxPrintSetupFlags(char *msg, GLuint flags )
 216 {
 217    fprintf(stderr, "%s(%x): %s%s%s%s%s\n",
 218            msg,
 219            (int)flags,
 220            (flags & TDFX_XYZ_BIT)     ? " xyz," : "",
 221            (flags & TDFX_W_BIT)     ? " w," : "",
 222            (flags & TDFX_RGBA_BIT)     ? " rgba," : "",
 223            (flags & TDFX_TEX0_BIT)     ? " tex-0," : "",
 224            (flags & TDFX_TEX1_BIT)     ? " tex-1," : "");
 225 }
 226
 227
 228
 229 void tdfxCheckTexSizes( GLcontext *ctx )
 230 {
 231    TNLcontext *tnl = TNL_CONTEXT(ctx);
 232    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 233
 234    if (!setup_tab[fxMesa->SetupIndex].check_tex_sizes(ctx)) {
 235       GLuint ind = fxMesa->SetupIndex |= (TDFX_PTEX_BIT|TDFX_RGBA_BIT);
 236
 237       /* Tdfx handles projective textures nicely; just have to change
 238        * up to the new vertex format.
 239        */
 240       if (setup_tab[ind].vertex_format != fxMesa->vertexFormat) {
 241          FLUSH_BATCH(fxMesa);
 242          fxMesa->dirty |= TDFX_UPLOAD_VERTEX_LAYOUT;
 243          fxMesa->vertexFormat = setup_tab[ind].vertex_format;
 244          fxMesa->vertex_stride_shift = setup_tab[ind].vertex_stride_shift;
 245
 246          /* This is required as we have just changed the vertex
 247           * format, so the interp and copy routines must also change.
 248           * In the unfilled and twosided cases we are using the
 249           * swrast_setup ones anyway, so leave them in place.
 250           */
 251          if (!(ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
 252             tnl->Driver.Render.Interp = setup_tab[fxMesa->SetupIndex].interp;
 253             tnl->Driver.Render.CopyPV = setup_tab[fxMesa->SetupIndex].copy_pv;
 254          }
 255       }
 256    }
 257 }
 258
 259
 260 void tdfxBuildVertices( GLcontext *ctx, GLuint start, GLuint count,
 261                         GLuint newinputs )
 262 {
 263    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 264    GLubyte *v = (fxMesa->verts + (start<<fxMesa->vertex_stride_shift));
 265    GLuint stride = 1<<fxMesa->vertex_stride_shift;
 266
 267    newinputs |= fxMesa->SetupNewInputs;
 268    fxMesa->SetupNewInputs = 0;
 269
 270    if (!newinputs)
 271       return;
 272
 273    if (newinputs & VERT_BIT_CLIP) {
 274       setup_tab[fxMesa->SetupIndex].emit( ctx, start, count, v, stride );
 275    } else {
 276       GLuint ind = 0;
 277
 278       if (newinputs & VERT_BIT_COLOR0)
 279          ind |= TDFX_RGBA_BIT;
 280
 281       if (newinputs & VERT_BIT_TEX0)
 282          ind |= TDFX_TEX0_BIT;
 283
 284       if (newinputs & VERT_BIT_TEX1)
 285          ind |= TDFX_TEX0_BIT|TDFX_TEX1_BIT;
 286
 287       if (fxMesa->SetupIndex & TDFX_PTEX_BIT)
 288          ind = ~0;
 289
 290       ind &= fxMesa->SetupIndex;
 291
 292       if (ind) {
 293          setup_tab[ind].emit( ctx, start, count, v, stride );
 294       }
 295    }
 296 }
 297
 298
 299 void tdfxChooseVertexState( GLcontext *ctx )
 300 {
 301    TNLcontext *tnl = TNL_CONTEXT(ctx);
 302    tdfxContextPtr fxMesa = TDFX_CONTEXT( ctx );
 303    GLuint ind = TDFX_XYZ_BIT|TDFX_RGBA_BIT;
 304
 305    if (ctx->Texture._EnabledUnits & 0x2)
 306       /* unit 1 enabled */
 307       ind |= TDFX_W_BIT|TDFX_TEX1_BIT|TDFX_TEX0_BIT;
 308    else if (ctx->Texture._EnabledUnits & 0x1)
 309       /* unit 0 enabled */
 310       ind |= TDFX_W_BIT|TDFX_TEX0_BIT;
 311    else if (ctx->Fog.Enabled)
 312       ind |= TDFX_W_BIT;
 313
 314    fxMesa->SetupIndex = ind;
 315
 316    if (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED)) {
 317       tnl->Driver.Render.Interp = interp_extras;
 318       tnl->Driver.Render.CopyPV = copy_pv_extras;
 319    } else {
 320       tnl->Driver.Render.Interp = setup_tab[ind].interp;
 321       tnl->Driver.Render.CopyPV = setup_tab[ind].copy_pv;
 322    }
 323
 324    if (setup_tab[ind].vertex_format != fxMesa->vertexFormat) {
 325       FLUSH_BATCH(fxMesa);
 326       fxMesa->dirty |= TDFX_UPLOAD_VERTEX_LAYOUT;
 327       fxMesa->vertexFormat = setup_tab[ind].vertex_format;
 328       fxMesa->vertex_stride_shift = setup_tab[ind].vertex_stride_shift;
 329    }
 330 }
 331
 332
 333
 334 void tdfxInitVB( GLcontext *ctx )
 335 {
 336    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 337    GLuint size = TNL_CONTEXT(ctx)->vb.Size;
 338    static int firsttime = 1;
 339    if (firsttime) {
 340       init_setup_tab();
 341       firsttime = 0;
 342    }
 343
 344    fxMesa->verts = (GLubyte *)ALIGN_MALLOC(size * sizeof(tdfxVertex), 32);
 345    fxMesa->vertexFormat = setup_tab[TDFX_XYZ_BIT|TDFX_RGBA_BIT].vertex_format;
 346    fxMesa->vertex_stride_shift = setup_tab[(TDFX_XYZ_BIT|
 347                                             TDFX_RGBA_BIT)].vertex_stride_shift;
 348    fxMesa->SetupIndex = TDFX_XYZ_BIT|TDFX_RGBA_BIT;
 349 }
 350
 351
 352 void tdfxFreeVB( GLcontext *ctx )
 353 {
 354    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 355    if (fxMesa->verts) {
 356       ALIGN_FREE(fxMesa->verts);
 357       fxMesa->verts = 0;
 358    }
 359
 360    if (fxMesa->UbyteColor.Ptr) {
 361       ALIGN_FREE(fxMesa->UbyteColor.Ptr);
 362       fxMesa->UbyteColor.Ptr = 0;
 363    }
 364
 365 }